Sonic boom in DC: Plane that crashed lost contact with air traffic control just after takeoff

In interviews with the New York Times and Newsday, Rumpel identified his daughter, Adina Azarian, and 2-year-old granddaughter Aria, as two of the victims.

Azarian, 49, was well-known in real estate circles in New York, described by friends and relatives as a fiercely competitive entrepreneur who started her own brokerage and was raising her daughter as a single parent.

“Being a mom was everything to her,” said Tara Brivic-Looper, a close friend who grew up with Azarian. “That they were together (at the end) is fitting.”

Friends say Azarian moved to East Hampton fulltime to raise Aria, with the help of a nanny. But she made frequent trips back home, bringing both Aria and the nanny to meet her tight-knit extended family on multiple occasions in recent months.

“She seemed so happy out there,” her cousin, Andrew Azarian, recalled. “Both of their lives hadn’t even started.”

“How could this happen?” he continued. “No one can explain it.”

A Republican donor whose family was killed when a private jet crashed after flying through restricted Washington DC airspace had previously lost a daughter in a scuba diving accident 29 years earlier.

Businessman John Rumpel, 75, told The Washington Post that his daughter, grandchild and her nanny were onboard the Cessna Citation that crashed in Virginia on Sunday.

It was in fact Mr Rumpel’s adopted daughter Adina Azarian, 49, and her two-year-old daughter Aria who were killed in the accident, reported The Daily Mail.

Azarian, a real estate agent by trade, was adopted by the family at the age of 40 because she reminded them of their late biological daughter Victoria, who had passed away at the age of 19 in 1994, the couple told the newspaper.

The two women had “the same fire in their bellies, and they were loving, caring children,” they said.

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People living in and around the nation’s capital on Sunday experienced a rare, if startling, sound: A sonic boom.

The boom was heard after U.S. military dispatched a fighter jet to intercept an unresponsive business plane flying over restricted airspace.

The Air Force gave the F-16 permission to fly faster than the speed of sound — something civilian aircraft rarely get to do — as the jet scrambled to catch up with the Cessna Citation. The result was a thunderous rumble that resonated across a metropolitan area that’s home to more than six million people.

Below is an explanation of what sonic booms are and their history in the U.S.

After the death of their first daughter, Mr Rumpel and his wife bought an 11-storey building in Melbourne, Florida, and turned it into Victoria Landing, an assisted-living facility named after their late daughter.

“Victoria Landing gets its name from Victoria Rumpel. Victoria was John’s daughter who died tragically at the young age of nineteen in a scuba diving accident,” its website states.

“John honors the memory of his daughter with the Victoria Landing name. With that honor comes the responsibility to make Victoria Landing the very best it can be… in commemoration of Victoria and in celebration of everything life can and should be. Life is simply too precious.”

When Sunday’s tragedy struck, the family had been returning home to East Hampton, New York, after a four-day trip to Mr Rumpel’s home in North Carolina, he told The New York Times.

“My family is gone, my daughter and granddaughter,” Barbara Rumpel, an NRA executive, wrote in a Facebook post.

The Cessna Citation’s lone pilot was seen slumped over in his seat before it crashed in a heavily-wooded area near Waynesboro, Virginia, a source told CNN.

The flight had been travelling from east Tennessee to Long Island, New York, at 34,000 feet when it became unresponsive and triggered an interception by military fighter jets protecting the US capital.

When the F-16 jets reached the plane at around 3.20pm ET they fired flares to try and get the pilot’s attention, according to a statement from the Continental US North American Aerospace Defense Command Region.

“The pilot was unresponsive and the Cessna subsequently crashed near the George Washington National Forest, Virginia,” the release said.

“NORAD attempted to establish contact with the pilot until the aircraft crashed.”

The jets were authorised by officials to “travel at supersonic speeds”, which led to a boom across the DC area.

The F-16s did not shoot down the plane, a US official told CNN.

Sonic booms are thunderous-like noises that are heard on the ground when airplanes overhead fly faster than the speed of sound. That speed is typically about 760 mph near sea level, but can vary depending on the temperature, altitude and other conditions, according to the Congressional Research Service.

As the plane speeds through the air, the air reacts like fluid. Molecules are pushed aside with great force, “and this forms a shock wave, much like a boat creates a wake in water,” according to NASA.

“When this line of shock wave passes by, listeners on the ground hear a very loud noise,” according to an explanation from Australia’s University of New South Wales.

Anthony Brickhouse, an associate professor of applied aviation sciences at Embry-Riddle Aeronautical University, said: “The different surfaces of the aircraft are basically punching through the air. The air actually rushing over the surfaces of the aircraft will cause a sonic boom.”

“When the Space Shuttle orbiter was coming back into the Earth’s atmosphere, you would typically get to sonic booms,” Brickhouse said. “The SpaceX Dragon capsule created sonic booms.”

Brickhouse said the F-16 flying over Washington on Sunday was “probably trying to go as fast it could to catch up” with the wayward Cessna airplane.

The F-16 Fighting Falcon can fly 1,500 mph or twice the speed of sound, known as Mach 2, according to the Air Force.

In 1947, test pilot Charles “Chuck” Yeager became the first person to fly faster than sound in an orange, bullet-shaped Bell X-1 rocket plane. His exploits were told in Tom Wolfe’s book “The Right Stuff,” and in the 1983 film it inspired.

In the movie, someone on the ground asks, “What’s that sound?” as Yeager’s plane flies above and breaks the sound barrier.

Interest in supersonic flight initially focused mostly on military planes, according to the Congressional Research Service. But it grew to include supersonic civil aircraft in the 1960s.